Announcement

Collapse
No announcement yet.

Rancilio S26 running off tank letting hot water back through inlet hose

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • voicecoils
    replied
    Amazing the versatility of hall effect sensors.

    Current clamps are handy tools!

    Leave a comment:


  • sprezzatura
    replied
    ::squints:: note to self - set selector on AC to read amperes to element, not DC (I broke my reading glasses last night). Thought that reading looked wrong.

    Leave a comment:


  • sprezzatura
    replied
    I guess I'll show off my favourite diagnostic tool [emoji14]Click image for larger version

Name:	ImageUploadedByTapatalk1447850927.621616.jpg
Views:	1
Size:	336.8 KB
ID:	741265Click image for larger version

Name:	ImageUploadedByTapatalk1447850943.254900.jpg
Views:	1
Size:	327.6 KB
ID:	741266

    Leave a comment:


  • sprezzatura
    replied
    We should start a What I Have In The Jewel Box sub forum [emoji3]

    Leave a comment:


  • sprezzatura
    replied
    Yep, those are mighty pretty, Mal!

    Leave a comment:


  • Dimal
    replied
    I reckon a good set of Flare Nut Spanners are worth their weight in gold when working on commercial/prosumer espresso machines. Wouldn't be without mine...

    Click image for larger version

Name:	FlareNutSpannerSet.JPG
Views:	1
Size:	57.4 KB
ID:	741264

    Mal.

    Leave a comment:


  • sprezzatura
    replied
    Cool! Nice machine. I like Rancilio machines - always have. The Park tools would be GREAT to get inside machines! I'm going to look for some spanners.

    Leave a comment:


  • voicecoils
    replied
    Originally posted by sprezzatura View Post
    Oops! Just read that new pump solved issue: I'll just say I covet your Park tools [emoji14]
    Yes, I'm really happy the new pump worked! I imagine the previous owner's connection to main pressure plus the old worn pump's 4-6bar combined to give ok or just slightly low pressure so it went unnoticed.

    I do have good bike tools from quite a few years working in bike shops, they're quite handy on the coffee machine

    This morning I pulled a great double ristretto shot and enjoyed it immensely as a piccolo. Hopefully many more good pours to come

    Leave a comment:


  • sprezzatura
    replied
    Ah, ok. My bad. Must be some sort of check valve or expansion valve system between the pump and boiler fill and h.e. system maybe then?

    Leave a comment:


  • Dimal
    replied
    Originally posted by sprezzatura View Post
    Have a look at your OPV - is it returning water (too much bypass?) or dumping it into the drain tray?
    These don't use an OPV as such, rather, they have a bypass valve fitted to the pump itself which recirculates water from the high-pressure side back to the low-pressure side, once the preset pressure adjustment has been reached... Nothing gets vented back to the drain-tray, or at least, it shouldn't...

    Mal.

    Leave a comment:


  • sprezzatura
    replied
    Oops! Just read that new pump solved issue: I'll just say I covet your Park tools [emoji14]

    Leave a comment:


  • sprezzatura
    replied
    Your pump may be generating enough pressures but a bad OPV will bleed it off before it gets through your puck.

    Leave a comment:


  • sprezzatura
    replied
    Have a look at your OPV - is it returning water (too much bypass?) or dumping it into the drain tray?

    Leave a comment:


  • Dimal
    replied
    Excellent stuff mate...

    Mal.

    Leave a comment:


  • voicecoils
    replied
    Thanks Mal, I'll work on my mouse tails

    After some more cleaning, descaling and oring changing on the internal check valve returning from the boiler, I think I've got my hot water backflow problem fixed.

    That gave me the confidence to swap the procon out and I'm happy to report the new pump is hitting full pressure with ease :-)

    A little explanation and group head pressure demo here:

    https://youtu.be/d2NfPojL-5U

    Leave a comment:

Working...
X